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- // Copyright Gottfried Ganßauge 2003.
- // Distributed under the Boost Software License, Version 1.0. (See
- // accompanying file LICENSE_1_0.txt or copy at
- // http://www.boost.org/LICENSE_1_0.txt)
- /*
- * Generic Return value converter generator for opaque C++-pointers
- */
- # ifndef RETURN_OPAQUE_POINTER_HPP_
- # define RETURN_OPAQUE_POINTER_HPP_
- # include <boost/python/detail/prefix.hpp>
- # include <boost/python/opaque_pointer_converter.hpp>
- # include <boost/python/detail/force_instantiate.hpp>
- # include <boost/python/to_python_value.hpp>
- # include <boost/python/detail/value_arg.hpp>
- # include <boost/mpl/assert.hpp>
- namespace boost { namespace python {
- namespace detail
- {
- template <class Pointee>
- static void opaque_pointee(Pointee const volatile*)
- {
- force_instantiate(opaque<Pointee>::instance);
- }
- }
- struct return_opaque_pointer
- {
- template <class R>
- struct apply
- {
- BOOST_MPL_ASSERT_MSG( is_pointer<R>::value, RETURN_OPAQUE_POINTER_EXPECTS_A_POINTER_TYPE, (R));
-
- struct type :
- boost::python::to_python_value<
- typename detail::value_arg<R>::type
- >
- {
- type() { detail::opaque_pointee(R()); }
- };
- };
- };
- }} // namespace boost::python
- # endif // RETURN_OPAQUE_POINTER_HPP_
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